#!/usr/bin/env node
/**
 * Postbuild prerender script — injects critical CSS and the user-visible
 * server-rendered welcome app into the built HTML.
 */
import { readFileSync, readdirSync, writeFileSync } from 'node:fs';
import { resolve, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';
import { createServer } from 'vite';

const __dirname = dirname(fileURLToPath(import.meta.url));

const STATIC_SCRIPT_NONCE = 'wm-static-bootstrap';

// Single source of truth for the brand's cross-site entity links + Organization
// structured data, injected into BOTH pro pages (see PAGES) so the homepage and
// /pro can't drift. Nonce'd to match the static-bootstrap CSP trust (otherwise
// deploy-config.test.mjs would demand a script-src sha256 hash for it).
const WM_SAMEAS = [
  'https://github.com/koala73/worldmonitor',
  'https://www.npmjs.com/package/worldmonitor',
  'https://x.com/worldmonitorai',
  'https://x.com/eliehabib',
  'https://discord.gg/re63kWKxaz',
  'https://www.wired.com/story/world-monitor-elie-habib/',
];
const ORGANIZATION_JSONLD = `    <script type="application/ld+json" nonce="${STATIC_SCRIPT_NONCE}">${JSON.stringify({
  '@context': 'https://schema.org',
  '@type': 'Organization',
  name: 'World Monitor',
  alternateName: 'WorldMonitor',
  url: 'https://www.worldmonitor.app/',
  logo: 'https://www.worldmonitor.app/favico/apple-touch-icon.png',
  description: 'Open-source real-time global intelligence platform aggregating conflicts, military movements, markets, infrastructure, and geopolitical data. Used by 2M+ people across 190+ countries.',
  founder: {
    '@type': 'Person',
    name: 'Elie Habib',
    url: 'https://x.com/eliehabib',
    sameAs: [
      'https://x.com/eliehabib',
      'https://github.com/koala73',
      'https://www.linkedin.com/in/elie-habib-7047b931',
      'https://www.wikidata.org/wiki/Q121365724',
      'https://www.crunchbase.com/person/elie-habib-2',
    ],
  },
  sameAs: WM_SAMEAS,
  contactPoint: {
    '@type': 'ContactPoint',
    contactType: 'customer support',
    email: 'support@worldmonitor.app',
    url: 'https://www.worldmonitor.app/pro',
    availableLanguage: 'English',
  },
  address: {
    '@type': 'PostalAddress',
    addressLocality: 'Dubai',
    addressCountry: 'AE',
  },
})}</script>`;
const DASHBOARD_SCREENSHOT_BASENAME = 'worldmonitor-7-mar-2026';
const DASHBOARD_SCREENSHOT_ASSETS = [
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME, extension: '.jpg' },
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME + '-640', extension: '.avif' },
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME + '-960', extension: '.avif' },
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME + '-1280', extension: '.avif' },
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME + '-640', extension: '.webp' },
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME + '-960', extension: '.webp' },
  { filenamePrefix: DASHBOARD_SCREENSHOT_BASENAME + '-1280', extension: '.webp' },
];

// This inline critical CSS is UNLAYERED, so it wins the cascade over the
// full Tailwind stylesheet (which lives in @layer utilities) regardless of
// specificity/media -- even after the deferred sheet loads. That means any
// `hidden <bp>:<display>` reveal (e.g. `hidden lg:flex` / `hidden md:block`
// nav rows, `hidden sm:block`) must ALSO be re-shown here in the matching
// @media block, or the
// unlayered `nav .hidden`/`main .hidden` rules keep those elements hidden at
// ALL widths (regressed the pro/welcome desktop nav in #4603; see the
// responsive nav and `main [class~="sm:block"]` reveals below).
const CRITICAL_CSS = [
  ':root{--font-sans:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--font-display:system-ui,sans-serif;--color-wm-bg:#050505;--color-wm-card:#111;--color-wm-border:#222;--color-wm-green:#4ade80;--color-wm-blue:#60a5fa;--color-wm-text:#f3f4f6;--color-wm-muted:#9ca3af}',
  '*,::before,::after{box-sizing:border-box;border:0 solid #222}html{background:#050505;color:#f3f4f6;-webkit-text-size-adjust:100%;tab-size:4}body{margin:0;background:#050505;color:#f3f4f6;font-family:var(--font-sans);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img,svg{display:block;vertical-align:middle}img{max-width:100%;height:auto}h1,h2,h3,p{margin:0}',
  '#root,#root>div{min-height:100vh}.glass-panel{background:rgba(17,17,17,.7);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid #222}.text-glow{text-shadow:0 0 20px rgba(74,222,128,.3)}.border-glow{box-shadow:0 0 20px rgba(74,222,128,.1)}',
  'nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(17,17,17,.7);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid #222;border-inline-width:0;border-bottom-width:0}nav>div{max-width:80rem;margin-inline:auto;padding-inline:1rem;height:4rem;display:flex;align-items:center;justify-content:space-between;gap:.75rem}nav a{display:flex;align-items:center;gap:.5rem}nav a[aria-label*="Launch"]{flex-shrink:0;background:#4ade80;color:#050505;padding:.5rem .75rem;border-radius:.25rem;font:700 .75rem/1 ui-monospace,SFMono-Regular,monospace;text-transform:uppercase;letter-spacing:.025em}nav .hidden{display:none}nav [class~=font-display]{font-family:var(--font-display);font-weight:700}nav [class~=text-wm-muted],main [class~=text-wm-muted]{color:#9ca3af}nav [class~=text-wm-green],main [class~=text-wm-green]{color:#4ade80}nav [class~=text-wm-blue]{color:#60a5fa}',
  'main>section:first-child{position:relative;overflow:hidden;padding:7rem 1rem 4rem}main>section:first-child>div:first-child{position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(74,222,128,.10) 0%,transparent 55%);pointer-events:none}main>section:first-child>div:nth-child(2){position:relative;z-index:10;max-width:64rem;margin-inline:auto;text-align:center}main h1{font-family:var(--font-display);font-weight:700;font-size:2.25rem;line-height:1.08;letter-spacing:-.025em}main p{margin:1.5rem auto 0;max-width:42rem;color:#9ca3af;font-size:1rem;line-height:1.5}',
  'main [class~=relative]{position:relative}main [class~=absolute]{position:absolute}main [class~=inset-0]{inset:0}main [class~=z-10]{z-index:10}main [class~=pointer-events-none]{pointer-events:none}main [class~=flex]{display:flex}main [class~=inline-flex]{display:inline-flex}main [class~=grid]{display:grid}main [class~=block]{display:block}main .hidden{display:none}main [class~=items-center]{align-items:center}main [class~=items-stretch]{align-items:stretch}main [class~=justify-center]{justify-content:center}main [class~=justify-between]{justify-content:space-between}main [class~=flex-col]{flex-direction:column}main [class~=flex-wrap]{flex-wrap:wrap}main [class~=grid-cols-2]{grid-template-columns:repeat(2,minmax(0,1fr))}',
  'main [class~=mx-auto]{margin-inline:auto}main [class~=mt-1]{margin-top:.25rem}main [class~=mt-3]{margin-top:.75rem}main [class~=mt-6]{margin-top:1.5rem}main [class~=mt-8]{margin-top:2rem}main [class~=mt-9]{margin-top:2.25rem}main [class~=mt-10]{margin-top:2.5rem}main [class~=mb-5]{margin-bottom:1.25rem}main [class~=gap-1]{gap:.25rem}main [class~=gap-2]{gap:.5rem}main [class~=gap-3]{gap:.75rem}main [class~=gap-4]{gap:1rem}main [class~=gap-x-6]{column-gap:1.5rem}main [class~=gap-y-3]{row-gap:.75rem}',
  'main [class~=w-full]{width:100%}main [class~=max-w-full]{max-width:100%}main [class~=max-w-2xl]{max-width:42rem}main [class~=max-w-3xl]{max-width:48rem}main [class~=max-w-5xl]{max-width:64rem}main [class~=min-w-0]{min-width:0}main [class~=shrink-0]{flex-shrink:0}main [class~=overflow-hidden]{overflow:hidden}',
  'main [class~=rounded-full]{border-radius:9999px}main [class~=rounded-sm]{border-radius:.25rem}main [class~=rounded-md]{border-radius:.375rem}main .border{border-style:solid;border-width:1px;border-color:#222}main .border-l{border-left-style:solid;border-left-width:1px}main .border-t{border-top-style:solid;border-top-width:1px}main .border-b{border-bottom-style:solid;border-bottom-width:1px}main [class~=bg-wm-card]{background:#111}main [class~=bg-wm-bg]{background:#050505}main [class~=bg-wm-green]{background:#4ade80;color:#050505}main [class~="bg-[#ff5f57]"]{background:#ff5f57}main [class~="bg-[#febc2e]"]{background:#febc2e}main [class~="bg-[#28c840]"]{background:#28c840}',
  'main [class~=px-3]{padding-inline:.75rem}main [class~=px-4]{padding-inline:1rem}main [class~=px-5]{padding-inline:1.25rem}main [class~=py-1]{padding-block:.25rem}main [class~=py-2]{padding-block:.5rem}main [class~=py-3]{padding-block:.75rem}main [class~="py-3.5"]{padding-block:.875rem}main [class~=font-mono]{font-family:var(--font-mono)}main [class~=font-display]{font-family:var(--font-display)}main [class~=font-bold]{font-weight:700}main [class~=uppercase]{text-transform:uppercase}main [class~=text-center]{text-align:center}main [class~=text-left]{text-align:left}',
  'main [class~=text-2xl]{font-size:1.5rem;line-height:1.33}main [class~=text-4xl]{font-size:2.25rem;line-height:1.11}main [class~=text-base]{font-size:1rem;line-height:1.5}main [class~=text-sm]{font-size:.875rem;line-height:1.25rem}main [class~=text-xs]{font-size:.75rem;line-height:1rem}main [class~="text-[9px]"]{font-size:9px}main [class~="text-[10px]"]{font-size:10px}main [class~="text-[11px]"]{font-size:11px}main [class~=leading-none]{line-height:1}main [class~=leading-relaxed]{line-height:1.625}main [class~=tracking-tight]{letter-spacing:-.025em}main [class~=tracking-wide]{letter-spacing:.025em}main [class~=tracking-wider]{letter-spacing:.05em}main [class~=tracking-widest]{letter-spacing:.1em}main [class~="tracking-[1px]"]{letter-spacing:1px}main [class~="tracking-[4px]"]{letter-spacing:4px}main [class~=break-words]{overflow-wrap:break-word}',
  'main [class~=text-wm-bg]{color:#050505}main [class~=text-wm-border]{color:#222}main [class~=text-wm-muted]{color:#9ca3af}main [class~=text-wm-text]{color:#f3f4f6}main [class~=text-wm-blue]{color:#60a5fa}main [class~=opacity-50]{opacity:.5}main [class~=opacity-60]{opacity:.6}main [class~=backdrop-blur-sm]{backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}main picture{display:block}main picture img{display:block;width:100%}',
  'main a[href*="welcome-hero"],main a[href*="moments"]{width:100%;justify-content:center;padding:.875rem 1.25rem;border-radius:.25rem;font:700 .875rem/1.25 var(--font-mono);letter-spacing:.025em;text-transform:uppercase}main a[href*="moments"]{background:transparent;color:#f3f4f6}',
  '@media (min-width:640px){nav>div{padding-inline:1.5rem}main>section:first-child{padding-top:8rem;padding-inline:1.5rem}main h1{font-size:3rem;line-height:1.05}main [class~="sm:flex-row"]{flex-direction:row}main [class~="sm:items-center"]{align-items:center}main [class~="sm:w-auto"]{width:auto}main [class~="sm:grid-cols-4"]{grid-template-columns:repeat(4,minmax(0,1fr))}main [class~="sm:max-w-3xl"]{max-width:48rem}main [class~="sm:max-w-none"]{max-width:none}main [class~="sm:px-4"]{padding-inline:1rem}main [class~="sm:px-6"]{padding-inline:1.5rem}main [class~="sm:px-8"]{padding-inline:2rem}main [class~="sm:tracking-wider"]{letter-spacing:.05em}main [class~="sm:block"]{display:block}}',
  '@media (min-width:768px){main h1{font-size:4.5rem}main p{font-size:1.125rem;line-height:1.75rem}main [class~="md:text-lg"]{font-size:1.125rem;line-height:1.75rem}nav [class~="md:block"]{display:block}}',
  '@media (min-width:1024px){nav [class~="lg:flex"]{display:flex}nav [class~="lg:hidden"]{display:none}}',
].join('');

// Flip each deferred preload to a real stylesheet on load, on error (retry a
// failed fetch as a stylesheet), and after a timeout (covers browsers that
// ignore `rel=preload as=style` and never fire an event) -- without a timeout
// or error arm a failed/unsupported preload leaves JS users on critical-CSS
// only, with the full sheet never applied. Idempotent (guarded rel check) and
// CSP-safe (no inline onload; runs inside the nonce'd bootstrap script).
const DEFERRED_STYLES_SCRIPT = "(function(){var links=document.querySelectorAll('link[data-wm-deferred-style]');for(var i=0;i<links.length;i++){(function(l){function a(){if(l.rel!=='stylesheet'){l.rel='stylesheet';}}l.addEventListener('load',a,{once:true});l.addEventListener('error',a,{once:true});setTimeout(a,3000);})(links[i]);}})();";

function findStylesheetTags(html) {
  return [...html.matchAll(/<link\b[^>]*\brel="stylesheet"[^>]*>/gi)]
    .map((match) => match[0]);
}

function tagAttribute(tag, name) {
  const marker = name + '="';
  const start = tag.indexOf(marker);
  if (start === -1) return '';
  const valueStart = start + marker.length;
  const valueEnd = tag.indexOf('"', valueStart);
  return valueEnd === -1 ? '' : tag.slice(valueStart, valueEnd);
}

function inlineCriticalCss(html, file) {
  const stylesheetTags = findStylesheetTags(html);
  if (stylesheetTags.length !== 1) {
    console.error("[prerender] ERROR: Expected exactly one stylesheet tag for " + file + ", found " + stylesheetTags.length + ".");
    process.exit(1);
  }

  const stylesheetTag = stylesheetTags[0];

  const href = tagAttribute(stylesheetTag, 'href');
  if (!href) {
    console.error('[prerender] ERROR: Could not parse stylesheet href for ' + file + '.');
    process.exit(1);
  }

  const crossorigin = stylesheetTag.includes(' crossorigin') ? ' crossorigin' : '';
  const criticalTags = [
    '    <style nonce="' + STATIC_SCRIPT_NONCE + '">' + CRITICAL_CSS + '</style>',
    '    <link rel="preload" as="style" href="' + href + '"' + crossorigin + ' data-wm-deferred-style nonce="' + STATIC_SCRIPT_NONCE + '">',
    '    <script nonce="' + STATIC_SCRIPT_NONCE + '">' + DEFERRED_STYLES_SCRIPT + '</script>',
    '    <noscript><link rel="stylesheet" href="' + href + '"' + crossorigin + '></noscript>',
  ].join('\n');
  return html.replace(stylesheetTag, criticalTags);
}

async function renderWelcomeRoot() {
  const server = await createServer({
    configFile: resolve(__dirname, 'vite.config.ts'),
    appType: 'custom',
    logLevel: 'error',
    server: { hmr: false, middlewareMode: true },
  });
  try {
    const { renderWelcomeApp } = await server.ssrLoadModule('/src/welcome-prerender.tsx');
    return rewriteBuiltAssetUrls(await renderWelcomeApp());
  } finally {
    await server.close();
  }
}

function builtAssetHref(filenamePrefix, extension) {
  const assetsDir = resolve(__dirname, '../public/pro/assets');
  const file = readdirSync(assetsDir).find((candidate) => (
    candidate.startsWith(`${filenamePrefix}-`) && candidate.endsWith(extension)
  ));
  if (!file) {
    console.error(`[prerender] ERROR: Could not find built asset for ${filenamePrefix}${extension}`);
    process.exit(1);
  }
  return `/pro/assets/${file}`;
}

function escapeRegExp(value) {
  return value.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}

function rewriteBuiltAssetUrls(markup) {
  let rewritten = markup;
  for (const { filenamePrefix, extension } of DASHBOARD_SCREENSHOT_ASSETS) {
    const builtHref = builtAssetHref(filenamePrefix, extension);
    const sourceAssetPattern = new RegExp(
      `(?:/pro/src/assets/|/@fs/[^"'<>\\s]*/)${escapeRegExp(filenamePrefix + extension)}`,
      'g',
    );
    if (!rewritten.match(sourceAssetPattern)) {
      console.error(`[prerender] ERROR: Could not find SSR asset URL for ${filenamePrefix}${extension} in welcome markup.`);
      process.exit(1);
    }
    rewritten = rewritten.replace(sourceAssetPattern, builtHref);
  }

  // Catch any OTHER dev-only asset URL — a newly added asset import the rewrite
  // map above doesn't cover would otherwise ship a broken /pro/src/assets or
  // /@fs path into the static HTML and break hydration on the hashed client URL.
  const leaked = rewritten.match(/(?:\/pro\/src\/assets\/|\/@fs\/)[^"'<>\s]+/);
  if (leaked) {
    console.error(`[prerender] ERROR: Unrewritten dev asset URL in welcome markup: ${leaked[0]}. Extend rewriteBuiltAssetUrls() to cover it.`);
    process.exit(1);
  }
  return rewritten;
}

const welcomeContent = await renderWelcomeRoot();

const PAGES = [
  { file: 'index.html', content: '', rootAttributes: '' },
  {
    file: 'welcome.html',
    content: welcomeContent,
    rootAttributes: ' data-wm-prerendered="welcome" data-wm-prerender-lang="en"',
  },
];

for (const { file, content, rootAttributes } of PAGES) {
  // Fail loudly if server-rendered visible content resolved a missing locale key.
  if (content.includes('undefined')) {
    console.error(`[prerender] ERROR: Prerendered content for ${file} contains literal "undefined". Check the welcome SSR locale keys.`);
    process.exit(1);
  }

  const htmlPath = resolve(__dirname, '../public/pro', file);
  let html = readFileSync(htmlPath, 'utf-8');
  html = inlineCriticalCss(html, file);
  if (!html.includes('</head>')) {
    console.error(`[prerender] ERROR: ${file} has no </head> to inject Organization JSON-LD into.`);
    process.exit(1);
  }
  html = html.replace('</head>', `${ORGANIZATION_JSONLD}\n  </head>`);
  if (!html.includes('<div id="root"></div>')) {
    console.error(`[prerender] ERROR: ${file} has no empty <div id="root"></div> to inject into.`);
    process.exit(1);
  }
  html = html.replace('<div id="root"></div>', `<div id="root"${rootAttributes}>${content}</div>`);
  writeFileSync(htmlPath, html, 'utf-8');
  console.log(`[prerender] Injected critical CSS and visible content into public/pro/${file}`);
}